Bug 126663

Summary:	Subpixel layout: SliderThumbElement value needs flooring.
Product:	WebKit	Reporter:	zalan <zalan>
Component:	Layout and Rendering	Assignee:	zalan <zalan>
Status:	RESOLVED INVALID
Severity:	Normal	CC:	jonlee, simon.fraser, webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	528+ (Nightly build)
Hardware:	Unspecified
OS:	Unspecified
Bug Depends on:
Bug Blocks:	126283

zalan

Reported 2014-01-08 13:45:16 PST

While calculating the thumb value at SliderThumbElement::setPositionFromPoint() as the result of a (touch) event, the subpixel on result is off by one. position = offset.y() - (renderBox()->height() / 2) - trackBoundingBox.y() - renderBox()->marginBottom(); This is similar to bug 126658 failed case: fast/forms/range/slider-transformed.html fast/forms/range/slider-zoomed.html

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Simon Fraser (smfr)

Comment 1 2014-01-08 15:29:43 PST

Prefer new behavior.

Radar WebKit Bug Importer

Comment 2 2014-01-14 10:24:15 PST

<rdar://problem/15815554>

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